Display screen or portion thereof with icon



FIG. 1 is a front view of a display screen or portion thereof with icon showing my new design; and,

FIG. 2 is an enlarged view of the icon in FIG. 1, shown separately for clarity of illustration.

The outer perimeter illustrated as a pair of evenly-spaced dashed broken lines in FIG. 1 depicts a display screen or portion thereof and forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 